Objective To investigate the situation of posttraumatic stress disorder （PTSD） of victims and the rescue soldiers in 2008 Wenchuan earthquake

and to observe the effect of Bailong Jieyu Granule （Herbal granule for relieving the posttraumatic stress disorder） on PTSD.Methods Three months after the earthquake

an investigation on earthquake victims and rescue soldiers was carried out to screen out those who were in accordance with the diagnosis standard of PTSD.The PTSD cases were evaluated with Symptom Checklist 90 （SCL-90） and administrated Bailong Jieyu Granule or placebo.Scores of all SCL-90 factors before and after treatment was observed and the result was compared with that of the normal control and soldier control.Results The PTSD incidence of the disaster victims was 20.7% and that of the rescue soldiers was 3.1%.The result of SCL-90 displayed the scores of disaster victims’ somatization

forcing

depression

anxiety

hostility

phobic factors were higher than those of Chinese norm

while the score of interpersonal sensitivity factor was lower than that of Chinese norm

the difference was significant （P<0.05 or P<0.01）.The scores of rescue soldiers’ somatization factor was higher than those of soldier norm

while the score of paranoid factor was lower than that of soldier norm

the difference was significant （P<0.05 or P<0.01）.The scores of disaster victims’ somatization

forcing

depression

anxiety

hostility

phobic factors after treatment of Bailong Jieyu Granule were significantly lower than before treatment （P<0.05 or P<0.01）.The rescue soldiers’ scores of somatization

depression factor

and paranoid factor after treatment were significantly lower than before treatment （P<0.05）.Both were better than those of the placebo group.Conclusion The earthquake victims and rescue soldiers were all prone to PTSD.Bailong Jieyu Granule is effective for PTSD

better than the placebo group.